MRI增强T1高分辨力各同性容积激发序列与TSET1W序列检出椎体转移瘤的对比分析

发布时间：2018-03-17 15:52

  本文选题：椎体　切入点：肿瘤转移　出处：《中国医学影像技术》2017年09期 　论文类型：期刊论文

【摘要】：目的比较增强MRI快速T1高分辨力各向同性容积激发(THRIVE)序列和TSE序列T1W检出椎体转移瘤的价值。方法对31例经穿刺活检病理证实的椎体转移瘤患者行MR增强检查,增强后先后行常规矢状位TSE T1W序列和矢状位THRIVE序列扫描。比较2个序列显示转移瘤病灶的数目、SNR、CNR和病灶边缘清晰度、运动伪影评分。结果 TSE T1W序列和THRIVE序列扫描时间分别为2min 55s和33s。增强后THRIVE序列显示病灶的数量与TSE T1W序列差异无统计学意义(Z=-0.816,P=0.414)。增强后THRIVE序列的SNR(432.54±271.60)、CNR(233.27±197.65)均低于TSE T1W序列的SNR(674.32±375.79)、CNR(312.38±207.49),差异均有统计学意义(t=-4.366、-2.660,P0.001、0.012)。TSE T1W序列显示病灶边缘较THRIVE序列清晰(Z=-4.082,P0.001),但运动伪影较THRIVE序列明显(Z=2.291,P=0.022)。结论增强扫描THRIVE序列扫描时间短,运动伪影少,椎体转移瘤的检出数目与TSE T1WI序列相当,在椎体转移瘤的检查中取代TSE T1W序列具有可行性。
[Abstract]:Objective to compare the value of enhanced MRI fast T1 high resolution isotropic volumetric excitation (THRIVE) sequence and TSE sequence T1W in detecting vertebral body metastases. Methods 31 cases of vertebral body metastases confirmed by biopsy and pathology were examined by Mr enhanced Mr imaging. Conventional sagittal TSE T1W sequence and sagittal THRIVE sequence were performed after contrast enhancement. Results the scanning time of TSE T1W sequence and THRIVE sequence were 2min55s and 33s, respectively. There was no significant difference in the number of lesions between enhanced THRIVE sequence and TSE T1W sequence. The SNR(432.54 卤271.60C THRIVE sequence of enhanced THRIVE sequence was lower than that of TSE T1W sequence (233.27 卤197.65). The SNR(674.32 卤375.79 SNR(674.32 was 312.38 卤207.490.The differences were statistically significant. Conclusion the scanning time of enhanced THRIVE sequence is shorter than that of THRIVE sequence, and the edge of the lesion is more clear than that of THRIVE sequence, but the motion artifact is obviously higher than that of THRIVE sequence. Conclusion the scanning time of enhanced THRIVE sequence is shorter than that of THRIVE sequence. The number of vertebral metastases detected was similar to that of TSE T 1WI, and it was feasible to replace TSE T 1W sequence in the examination of vertebral body metastasis.
【作者单位】： 中山大学附属第二医院放射科;中山大学附属第二医院超声科;
【分类号】：R445.2;R730.44
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